Environment and Ecology — Minor 1 2022 question paper
MMMUT Computer Science and Engineering previous year question paper for Environment and Ecology (BSM-144), semester 1, Minor 1 2022. All 8 questions are listed below, each with a written answer on Nexsus.
Paper details
Subject: Environment and Ecology (BSM-144)
Branch: Computer Science and Engineering
Semester: 1
Exam: Minor 1 2022
Questions: 8
Questions asked in Environment and Ecology Minor 1 2022
Q1. Attempt any Two parts of the following. Q. 1 (a) is compulsory.
Q1(a). Draw with labelled diagram Layers of Atmosphere. Define "air pollution". Explain sources and effect on Human (air born diseases), plants and Building and control techniques. [6 marks]
Q1(b). Determine the effective height of a stack with the following given data. Physical stack height = 170 m tall with 0.95 dia. (inside), wind velocity = 2.75 m/s and air temp. = 20^{o}C, Barometric Atm. pressure = 1000 millibars, stack gas velocity = 11.12 m/s, stack gas temperature = 160^{o}C. [4 marks]
Q1(c). Write List of particulates and Gaseous pollutants emitted from automobiles and Write short note on Green House Effect and Explain with labeled diagram of Green House Effect, Ozone layer depletion. [4 marks]
Q2. Attempt any Two parts of the following. Q. 2 (a) is compulsory.
Q2(a). Write details of Water Pollution, sources, effect (water born diseases) and Purification of water, sedimentation, Filtration, and Disinfection (Water Treatment). [6 marks]
Q2(b). Discuss with labelled diagram of Water pollution, effect, and Purification of waste water (WWTP). [4 marks]
Q2(c). The sewage of a town is to be discharged into a river stream, the quantity of sewage produced per day is 8 million litres and its BOD is 200 mg/L. If the discharge in the river is 250 L/s and its BOD is 6 mg/L, find out the BOD of the diluted water.In the above question, what should be the river discharge Qw if it is desired to reduce the BOD of diluted water to 20mg/L? [4 marks]